Death Rattle

Instant, 5B (6)
Delve (You may exile any number of cards from your graveyard as you cast this spell. It costs {1} less to cast for each card exiled this way.)

Destroy target nongreen creature. It can't be regenerated.¹
Illus. Vance Kovacs

Gatherer Card Rulings [Nov 2009]

• 5/1/2007: Checks to see if the creature is nongreen on both targeting and resolution.  It doesn’t matter if it’s changed colors in between.

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/9)	Future Sight (Common)